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Bought from hands modem megaphone MR150-3 (e5573bs-320). Only now I do not remember whether the network was checking whether or not in a state of locked ...
The original configuration: fw 21.200.xx and locked on the megaphone.
According to the instructions of the cap
A new way to unlock and firmware (2017) (if you have firmware version up to 315)
I unlocked and freewheeling firmware E5573Bs-320_Update_21.333.63.00.67_M_AT_04.10 + web muzzle E5573_Update_WEBUI_17.100.11.00.03_Mod1.6. Next fix ttl, imei change from the Nokia Lumia, securing imei, reset to default settings.
The problem ->which sim card is inserted (Mega, MTS, Tele2 ...) NO SIGNAL and the corresponding red LED. Simcoe modem sees itself unnecessarily in the manual network search, he finds them, but shall not be registered manually.
What I just did not do: removing pseudo bedblokov (from 3372h) and without removal and subsequent firmware patched bootloader 5573bs, and after flashing (tried everything else, and native of the megaphone and imei native returned) and through balong from under cmd flash, and from under huawei flasher 3 ... oem code is entered and the in-00000000 remade, and flash password entry ... Nothing helps. All put, sewn, and to sense 0.
More than a dozen 3372h sewn / restored, 823 zte, zte mf90 +, like there were with similar symptoms, but everything was resolved either by flashing the "needle", or editing nv in case of re-unlock (zte mf90 +).
What do you advise? Are there any other options to revive?